How to Say "boiling" in Spanish
The Spanish word for “boiling” is “cocción” — B1 level.

Examples
El tiempo de cocción de la pasta es de ocho minutos.
The cooking time for the pasta is eight minutes.
Prefiero una cocción lenta para que la carne quede tierna.
I prefer slow cooking so the meat stays tender.
La cocción al vapor conserva mejor los nutrientes.
Steam cooking preserves nutrients better.
A Feminine Noun Ending in -ción
Almost all Spanish words ending in '-ción' are feminine. This means you should always use 'la' or 'una' with this word (e.g., 'la cocción').
Noun vs. Verb
Use 'cocción' when you want to talk about the 'process' or 'time' as a thing. If you want to say 'I am cooking,' use the verb 'cocinar'.
Using 'cocina' for 'cooking process'
Mistake: “La cocina de la carne toma una hora.”
Correction: La cocción de la carne toma una hora. (Use 'cocina' for the room or the style of food, but use 'cocción' for the physical act of heat hitting food.)
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